console.log("a模块");
import myobj1 from "./b.js";
console.log(myobj1);

//默认导出:每个模块只能默认导出一次
let a = 10;
let b = 20;
let obj = {
    a,
    b
}

let c = 30;
let d = 40;
export { c };
export { d };
export default obj;
// export { b as default };
